the asthenosphere. 2. Which type of seismic wave causes rock particles to move in the same direction as the wave movement? 3. In which order will a seismogram record seismic waves?
Answer (1)
The asthenosphere is a soft, semi-solid layer of the Earth's mantle located just below the lithosphere. It is made up of partially molten rock that flows slowly, allowing the tectonic plates above it to move. This movement is essential for plate tectonics and causes phenomena like earthquakes and volcanic activity. The type of seismic wave that causes rock particles to move in the same direction as the wave movement is the Primary wave, also known as the P-wave. P-waves are the fastest seismic waves and travel through solids, liquids, and gases. Lastly, on a seismogram, the seismic waves are recorded in this order: P-waves first, followed by S-waves (Secondary waves), and then the slower Surface waves, which usually cause the most damage due to their strong motion near the Earth’s surface.
